[PATCH] D100818: [lld-macho] Implement branch-range-extension thunks

[Greg McGary via Phabricator via llvm-commits]

gkm updated this revision to Diff 344649.
gkm added a comment.

- remove call-site memoization overhead from `prepareSymbolRelocation()` to avoid penalizing programs that don't need thunks. Do that work in `MergedOutputSection::needsThunks()`, only after we have determined that we need thunks.


Repository:
  rG LLVM Github Monorepo

CHANGES SINCE LAST ACTION
  https://reviews.llvm.org/D100818/new/

https://reviews.llvm.org/D100818

Files:
  lld/MachO/Arch/ARM64.cpp
  lld/MachO/Driver.cpp
  lld/MachO/InputSection.cpp
  lld/MachO/InputSection.h
  lld/MachO/MergedOutputSection.cpp
  lld/MachO/MergedOutputSection.h
  lld/MachO/Options.td
  lld/MachO/Symbols.cpp
  lld/MachO/Symbols.h
  lld/MachO/SyntheticSections.cpp
  lld/MachO/SyntheticSections.h
  lld/MachO/Target.h
  lld/MachO/Writer.cpp
  lld/test/MachO/arm64-thunks.s
  lld/test/MachO/tools/generate-thunkable-program.py

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